From 20af3172ce46a13789dbb4087e1115c95cfa9227 Mon Sep 17 00:00:00 2001 From: Fred Drake Date: Thu, 28 Sep 2000 19:10:56 +0000 Subject: popen4(): Added for Unix. Fixed a typo in a docstring. --- Lib/os.py | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/Lib/os.py b/Lib/os.py index 70af0a9..ea38021 100644 --- a/Lib/os.py +++ b/Lib/os.py @@ -317,7 +317,7 @@ else: def getenv(key, default=None): """Get an environment variable, return None if it doesn't exist. - The optional second argument can specify an alternative default.""" + The optional second argument can specify an alternate default.""" return environ.get(key, default) def _exists(name): @@ -458,14 +458,18 @@ otherwise return -SIG, where SIG is the signal that killed it. """ if _exists("fork"): if not _exists("popen2"): def popen2(cmd, mode="t", bufsize=-1): - assert mode[:1] in ("b", "t") import popen2 stdout, stdin = popen2.popen2(cmd, bufsize) return stdin, stdout if not _exists("popen3"): def popen3(cmd, mode="t", bufsize=-1): - assert mode[:1] in ("b", "t") import popen2 stdout, stdin, stderr = popen2.popen3(cmd, bufsize) return stdin, stdout, stderr + + if not _exists("popen4"): + def popen4(cmd, mode="t", bufsize=-1): + import popen2 + stdout, stdin = popen2.popen4(cmd, bufsize) + return stdin, stdout -- cgit v0.12